Ultrasonics

Journal: Ultrasonics

Abbreviation

Ultrasonics

Publisher

Elsevier

ISSN

0041-624X
1874-9968

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Publications 1 - 10 of 34

Air coupled ultrasonic inspection with Lamb waves in plates showing mode conversion
Römmeler, Arno; Zolliker, Peter; Neuenschwander, Jürg; et al. (2020)
Ultrasonics
Improving axial resolution uniformity in deep-tissue optoacoustic imaging via entropy-driven design of dual-frequency multi-segment arrays
Cheng , Weixia; Zhang , Ruochong; Ciobanu , Cristian; et al. (2026)
Ultrasonics
Dual-frequency or multi-frequency transducers have been proposed to balance deep penetration and high resolution in optoacoustic (OA) imaging, based on the well-established tradeoff that low frequencies provide deeper penetration, while high frequencies offer higher resolution. In practice, conventional transducer designs are primarily guided by the signal’s center frequency and bandwidth, as these parameters fundamentally constrain spatial resolution. However, such criteria alone are insufficient, as they overlook the influence of transducer geometry within the array. To address this limitation, we introduce k-space analysis and a weighted entropy ( W E ) metric that links transducer design parameters to directional resolution performance. Simulations and phantom experiments validated that the dual-frequency multi-segment transducer array (DF-MSTA), combining 3 and 7.5 MHz, achieved more uniform and enhanced axial resolution (by up to 23.8 %), compared to a single-frequency MSTA operating at 7.5 MHz. The results align with predictions from the k-space analysis and W E quantification. This work provides a transducer design strategy that jointly considers frequency selection and array geometry, along with a quantitative framework to optimize axial resolution in deep-tissue OA imaging, offering insights beyond conventional approaches.
Optimization of receiver arrangements for passive emitter localization methods
Flückiger, Michael; Neild, Adrian P.; Nelson, Bradley J. (2012)
Ultrasonics
Wave propagation in a wooden bar
Veres, István A.; Sayir, Mahir B. (2004)
Ultrasonics
Towards the automation of micron-sized particle handling by use of acoustic manipulation assisted by microfluidics
Oberti, Stefano; Neild, Adrian; Möller, Dirk; et al. (2008)
Ultrasonics
A novel multi-segment path analysis based on a heterogeneous velocity model for the localization of acoustic emission sources in complex propagation media
Gollob, Stephan; Kocur, Georg K.; Schumacher, Thomas; et al. (2017)
Ultrasonics
Acoustic field radiated into a transversely isotropic solid from a small aperture spherical surface
Every, A.G.; Wenke, I.; Aebi, L.; et al. (2011)
Ultrasonics
Time reverse modeling of acoustic emissions in a reinforced concrete beam
Kocur, Georg K.; Saenger, Erik H.; Grosse, Christian U.; et al. (2016)
Ultrasonics
Four-dimensional optoacoustic monitoring of tissue heating with medium intensity focused ultrasound
Dean-Ben, Xose Luis; Oyaga Landa, Francisco Javier; Penacoba, Silvia Ronda; et al. (2019)
Ultrasonics
Active fiber composites for the generation of Lamb waves
Birchmeier, M.; Gsell, D.; Juon, M.; et al. (2009)
Ultrasonics

Publications 1 - 10 of 34

Journal: Ultrasonics

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